Home / 172,916.40-259,397.28-67,721.70

Finding the Fourth Proportional to 172,916.40, 259,397.28 and 67,721.70

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Solution

The fourth proportional to 172,916.40, 259,397.28 and 67,721.70 is: 101,591.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,916.40 : 259,397.28 = 67,721.70 : x
  2. Step 2: Convert to fraction form
    172,916.40/259,397.28 = 67,721.70/x
  3. Step 3: Cross multiply
    172,916.40x = 259,397.28 × 67,721.70
  4. Step 4: Simplify right side
    172,916.40x = 17,566,824,776.98
  5. Step 5: Solve for x
    x = 17,566,824,776.98/172,916.40
  6. Step 6: Final answer
    x = 101,591.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.